Fly‐Ash‐Supported Synthesis of 2‐Mercaptobenzothiazole Derivatives under Microwave Irradiation

Abstract

Microwave‐assisted, solvent‐free alkylation and acylation of 2‐mercaptobenzothiazole has been attempted using silica gel, alumina, and a new solid support, fly ash. Fly ash, a waste generated at thermal power stations, could be used as solid support just as efficiently as commercial supports. The additional features of methodology include a much faster reaction, easy workup, higher yields, higher purity of the products, and an ecofriendly approach.

Keywords:

• dry media
• fly ash
• 2‐mercaptobenzothiazole (MBT)
• microwave irradiation
• solid support

Acknowledgment

Hemant P. Narkhede and Uttam B. More are thankful for awards of Teacher Fellowships under the Faculty Improvement Programme and financial assistance from the University Grants Commission, New Delhi.

Notes

This paper is dedicated to Prof. R. B. Mane, Department of Chemistry, Shivaji University.

This work was presented at the National Conference on Recent Trends in Synthetic Organic Chemistry, North Maharashtra University, Jalgaon, India, December 16–17, 2005.